.login-box {
    width: 400px;
    display: inline-block;
    position: fixed;
    top: 50%;
    left: 50%;
    text-align: center;
    transform: translate(-50%, -50%);
    .login-title {
        font-size: 28px;
    }
    .login-desc {
        color: gray;
        padding: 20px 0;
    }
    .login-btn {
        width: 100%;
    }
}